Hi! I have these 4 chicks (2 bantam, 2 EE) who are about a week and a half old. The two EE like pecking at the bantams and I was wondering if my brooder is too small? The radiant heat plate I got won't fit in the brooder if I set it up like a brooder heat plate so I have it standing up but they seem to be fine with that. Feedback please?